Home / 18,221.30-25,128.69-11,937.14

Finding the Fourth Proportional to 18,221.30, 25,128.69 and 11,937.14

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Solution

The fourth proportional to 18,221.30, 25,128.69 and 11,937.14 is: 16,462.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,221.30 : 25,128.69 = 11,937.14 : x
  2. Step 2: Convert to fraction form
    18,221.30/25,128.69 = 11,937.14/x
  3. Step 3: Cross multiply
    18,221.30x = 25,128.69 × 11,937.14
  4. Step 4: Simplify right side
    18,221.30x = 299,964,690.55
  5. Step 5: Solve for x
    x = 299,964,690.55/18,221.30
  6. Step 6: Final answer
    x = 16,462.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.